Thanks MK15!
It definitely helps to cool the engine down with the cover remove. I noticed that last summer when I park in the garage with the engine cover on. Even after shutting the engine down and closed the garage door, the heat still builds up and the cover is hot to the touch. If I had to go back to the garage after 10-15 mins, the whole garage is pretty warm. BTW, I noticed that bec. I always pop the hood when I park in the garage.
Now, the same summer with cover off. After shutting the engine down, I could touch the top of the black intake manifold with no problem. Also, the garage does not get warm when I popped the hood when I park.
Just an FYI, there are 2 rectangular covers behind (upper side area) of the radiator that open and close when you reach a certain speed, and brings in a fresh air to the engine bay. These holes cools the engine down while driver too! (Not only the coolant cooling it

). So with no cover, the fresh air goes directly to the engine block or top manifold with nothing to block it from.
These holes might not open at lower speed, bec. I drove the car yesterday while it was raining and the engine bay was still shinny and clean. I was just driving less than 40MPH. At certain high speed driving these holes directs fresh air from the outside bec. airflow is fast enough to open those 2 rectangular cover behind the top radiator.
Check it out yourself.
Dirver side
Passenger side
And BTW, i missed cleaning these spots...
